ASTROSAT CZTI

Data Quality Report

Orbit 20160809_G05_235T01_9000000590_level2

Creation date: 2018-05-17T12:42:20.077699
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G05_235T01_9000000590cztM0_level2.evt modeM0/AS1G05_235T01_9000000590cztM0_level2_quad_clean.evt
Size (bytes)12,286,969,9201,919,329,920
Size11.4 GB 1.8 GB
Events in quadrant A69,143,95012,272,744
Events in quadrant B76,839,22812,414,704
Events in quadrant C83,045,47711,969,438
Events in quadrant D132,873,85311,086,243

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030860
B030880
C030920
D030920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03154030
B03315200
C03565160
D05013480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15161624831.637690%
B15160029051.916227%
C15160472904.808580%
D1514681719611.352893%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 175561 151790 197 197 0.11% 0.13%
B 175561 151781 395 395 0.22% 0.26%
C 175561 151773 5146 5146 2.93% 3.39%
D 175561 151684 14279 14279 8.13% 9.41%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 771664 215.7 17343 16958 3498.9
A 8 15 562874 156.02 17343 16958 3498.9
A 0 50 256482 68.46 17343 16958 3498.9
B 15 204 2469379 736.43 17581 17156 3329.9
B 4 80 2218229 661.01 17581 17156 3329.9
B 14 167 1414255 419.57 17581 17156 3329.9
C 9 68 12943829 3333.29 16780 16831 3878.1
C 14 48 3254423 834.83 16780 16831 3878.1
C 9 247 731916 184.39 16780 16831 3878.1
D 2 63 35687968 9174.0 16276 15788 3888.4
D 13 235 20702532 5320.12 16276 15788 3888.4
D 2 136 3037299 777.06 16276 15788 3888.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter